Signal transmission circuit packaging structure

ABSTRACT

A signal transmission circuit packaging structure is disclosed. The signal transmission circuit packaging structure includes a body, a main circuit unit, power pins, input pins, output pins, control pins and ground pins. The main circuit unit is arranged in the center of the body. The power pins are arranged in the center of the body. The input pins are arranged at a first side of the body and are electrically connected to the main circuit unit. The output pins are arranged at a side of the body opposite to the first side and are electrically connected to the main circuit unit. The control pins are arranged at a second side of the body and are electrically connected to the main circuit unit. The ground pins are arranged at corners of the body to separate the input pins, the output pins and the control pins.

BACKGROUND OF THE INVENTION Field of the Invention

The present invention relates to a signal transmission circuit packagingstructure, and more particularly to a signal transmission circuitpackaging structure capable of separating different high-speed signaltransmission paths so as to prevent crosstalk.

Description of the Prior Art

Data communication and transmission rates continue to increase withfurther advances in technology. High-speed data transmission is demandedby both communication devices and data server devices. Regarding thecurrent USB 3.0, the expected transmission rate of USB 3.0 can reach ashigh as 5 Gbps (625 MB/s). In the prior art, a signal repeaterintegrated circuit (IC) is used in USB 3.0 to enhance signal quality ata high-speed interface. Thus, in such a high-speed transmissionenvironment, the design of a packaging structure of the repeater IC is acritical factor in the high-speed transmission of data. A poorlydesigned repeater may cause issues of crosstalk and degrade signalquality.

Therefore, it is necessary to create a novel signal transmission circuitpackaging structure for solving the issues of the prior art.

SUMMARY OF THE INVENTION

The primary object of the present invention is to provide a signaltransmission circuit packaging structure which is capable of separatingdifferent high-speed signal transmission paths so as to preventcrosstalk.

To achieve the object described above, a signal transmission circuitpackaging structure of the present invention includes a body, a maincircuit unit, a plurality of power pins, a plurality of input pins, aplurality of output pins, a plurality of control pins, and a pluralityof ground pins. The body includes a first side and a second side,wherein the first side is adjacent to the second side. The main circuitunit is arranged in the center of the body. The plurality of power pinsare arranged in the center of the body and supply a power signal to themain circuit unit. The plurality of input pins are arranged at the firstside of the body and are electrically connected to the main circuitunit. The plurality of output pins are arranged at a side of the bodyopposite to the first side and are electrically connected to the maincircuit unit. The plurality of control pins are arranged at the secondside and between the center of the body and the second side, and theplurality of control pins are electrically connected to the main circuitunit. The plurality of ground pins are arranged at corners of the bodyand arranged between the plurality of input pins, the plurality ofoutput pins, and the plurality of control pins so as to separate theplurality of input pins, the plurality of output pins, and the pluralityof control pins.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a pin layout of a signal transmissioncircuit packaging structure of the present invention;

FIG. 2 is a schematic diagram of transmission channels of a signaltransmission circuit packaging structure of the present invention; and

FIG. 3 is a schematic diagram that combines a pin layout and thetransmission channels in a signal transmission circuit packagingstructure of the present invention.

DETAILED DESCRIPTION OF THE EMBODIMENTS

Preferred specific embodiments are given below to better understand thetechnical contents of the present invention.

Please refer to FIG. 1, which shows a schematic diagram of a pin layoutof a signal transmission circuit packaging structure of the presentinvention.

In an embodiment of the present invention, a signal transmissionpackaging structure 1 is adapted to be electrically connected to otherelectronic modules so as to transmit electrical signals. Thetransmission mode of electrical signals may be implemented in the formof single-ended signals or differential signals; however, the presentinvention is not limited thereto. In embodiments of the presentinvention, descriptions are given in the form of differential signals.It should be noted that, although the terms “first” and “second” areused to describe various elements of the present invention, these termsare not to be construed as limitations of the elements. Such terms areused merely for differentiating one element from another element. Forexample, without departing from the scope of the various embodimentsdescribed, a first input pin may be referred to as a second input pin,and similarly, a second input pin may be referred to as a first inputpin. Moreover, the first input pin and the second input pin are bothinput pins but are not the same input pin.

The signal transmission circuit packaging structure 1 includes a body10, a main circuit unit 20 (as shown in FIG. 2), a plurality of powerpins Vcc, a plurality of input pins, a plurality of output pins, aplurality of control pins and a plurality of ground pins Vss. The body10 may be a single-layer or multi-layer circuit board and includes afirst side 11 and a second side 12, wherein the first side 11 isadjacent to the second side 12. The main circuit unit 20 is arranged inthe center of the body 10 and may be arranged on a layer of the circuitboard other than a layer which other pins are connected to. The maincircuit unit 20 is a repeater circuit; however, the present invention isnot limited thereto. The plurality of power pins Vcc are arranged in thecenter of the body 10 and supply a power signal to the main circuit unit20. The plurality of input pins may be first input pins RX0P and RX0N,second input pins RX1P and RX1N, third input pins RX2P and RX2N, andfourth input pins RX3P and RX3N, and the plurality of input pins arearranged at the first side 11 of the body 10 and electrically connectedto the main circuit unit 20. The plurality of output pins may be firstoutput pins TX0P and TX0N, second output pins TX1P and TX1N, thirdoutput pins TX2P and TX2N, and fourth output pins TX3P and TX3N, and theplurality of output pins are arranged at a side opposite to the firstside 11 of the body 10 and electrically connected to the main circuitunit 20. The transmission signal is inputted from the plurality of inputpins to the main circuit unit 20 and then transmitted to the pluralityof output pins. The first input pins RX0P and RX0N, the second inputpins RX1P and RX1N, the third input pins RX2P and RX2N, and the fourthinput pins RX3P and RX3N are in an arrangement of mirroring orsymmetrical to the first output pins TX0P and TX0N, the second outputpins TX1P and TX1N, the third output pins TX2P and TX2N, and the fourthoutput pins TX3P and TX3N at opposite sides of the body 10, and all arearranged at edges of the body 10 such that the main circuit unit 20 canbe connected with reduced transmission paths to external electronicmodules.

The plurality of control pins CTRL1, CTRL2, CTRL3, CTRL6, CTRL7 andCTRL8 are arranged at the second side of the body, and the remainingcontrol pins CTRL4, CTRL5, CTRL9 and CTRL10 are arranged in positionsbetween the center of the body and the second side and closer to themain circuit unit 20. All the plurality of control pins CTRL1 to CTRL10are electrically connected to the main circuit unit 20. The plurality ofcontrol pins CTRL1 to CTRL10 may serve for gain or equalization controlof the main circuit unit 20 or as test pins; however, the presentinvention does not pose any limitations on the functions of theplurality of control pins CTRL1 to CTRL10. The plurality of ground pinsVss are arranged at corners of the body 10 and arranged between theplurality of input pins RX0P to RX3N and the plurality of output pinsTX0P to TX3N so as to separate the plurality of input pins RX0P to RX3N,the plurality of output pins TX0P to TX3N and the plurality of controlpins CTRL1 to CTRL10.

Then refer to FIG. 2, which shows a schematic diagram of transmissionchannels of a signal transmission circuit packaging structure of thepresent invention.

The first input pins RX0P and RX0N, the second input pins RX1P and RX1N,the third input pins RX2P and RX2N, and the fourth input pins RX3P andRX3N are electrically connected to the main circuit unit 20 through afirst high-speed input channel 31, a second high-speed input channel 32,a third high-speed input channel 33 and a fourth high-speed inputchannel 34, respectively, and then electrically connected to the firstoutput pins TX0P and TX0N, the second output pins TX1P and TX1N, thethird output pins TX2P and TX2N, and the fourth output pins TX3P andTX3N through a first high-speed output channel 41, a second high-speedoutput channel 42, a third high-speed output channel 43 and a fourthhigh-speed output channel 44, respectively. The first high-speed inputchannel 31, the second high-speed input channel 32, the third high-speedinput channel 33 and the fourth high-speed input channel 34 are in anarrangement of mirroring or symmetrical to the first high-speed outputchannel 41, the second high-speed output channel 42, the thirdhigh-speed output channel 43 and the fourth high-speed output channel44. All the plurality of control pins CTRL1 to CTRL10 are electricallyconnected to the main circuit unit 20 through the plurality of low-speedtransmission channels 51 so as to transmit control signals to the maincircuit unit 20. It should be noted that, although the terms “theplurality of input pins RX0P to RX3N” and “plurality of output pins TX0Pto TX3N” are used to describe various pins of the present invention,these terms are not to be construed as limitations of the pins. Forexample, given the permission of the functions of the man circuit unit20, the transmission path of the electrical signal may be opposite; thetransmission path may be inputted from the first output pins TX0P andTX0N and outputted from the first input pins RX0P and RX0N so as toachieve the function of bi-directional signal transmission.

Then refer to FIG. 3, which shows a combination schematic diagram of apin layout and the transmission channels in a signal transmissioncircuit packaging structure of the present invention.

As shown in FIG. 3, the plurality of input pins RX0P to RX3N, theplurality of output pins TX0P to TX3N and the plurality of control pinsCTRL0 to CTRL10 are all separated by the ground pins Vss. Moreover, thehigh-speed input channels 31 to 34 and the high-speed output channels 41to 44 are not close to any of the plurality of low-speed transmissionchannels 51 and are mutually separated by certain distances. As aresult, the high-speed transmission signals will not experienceinterference due to crosstalk of low-speed control signals, thusproviding optimal high-speed signal quality.

It is known from the description above that the signal transmissioncircuit packaging structure 1 of the present invention is capable ofreducing distances of signal transmission, the signal attenuation, thenumber of vias in a circuit board and complications in circuit layout,as well as preventing issues of crosstalk and degraded signal quality,and the design of the present invention is obviously superior to designsof the prior art.

It should be noted that the embodiments given above are examples of thepresent invention rather than limitations of the present invention. Anyvariation that does not depart from the fundamental structure of theinvention is to be encompassed within the scope of protection inaccordance with the broadest interpretation of the appended claims.

What is claimed is:
 1. A signal transmission circuit packagingstructure, comprising: a body, comprising a first side and a secondside, the first side being adjacent to the second side; a main circuitunit, arranged in a center of the body; a plurality of power pins,arranged in the center of the body and supplying a power signal to themain circuit unit; a plurality of input pins, arranged at the first sideof the body and electrically connected to the main circuit unit; aplurality of output pins, arranged at a side of the body opposite to thefirst side and electrically connected to the main circuit unit; aplurality of control pins, arranged at the second side of the body andbetween the center of the body and the second side, and electricallyconnected to the main circuit unit; and a plurality of ground pins,arranged at corners of the body and arranged between the plurality ofinput pins, the plurality of output pins and the plurality of controlpins, so as to separate the plurality of input pins, the plurality ofoutput pins and the plurality of control pins.
 2. The signaltransmission circuit packaging structure according to claim 1, whereinthe plurality of input pins are in an arrangement of mirroring orsymmetrical to the plurality of output pins at edges of the body.
 3. Thesignal transmission circuit packaging structure according to claim 2,wherein the plurality of input pins are electrically connected to themain circuit unit through a plurality of high-speed input channels, andthen electrically connected to the plurality of output pins through aplurality of high-speed output channels.
 4. The signal transmissioncircuit packaging structure according to claim 3, wherein the pluralityof high-speed input channels are in an arrangement of mirroring orsymmetrical to the plurality of high-speed output channels.
 5. Thesignal transmission circuit packaging structure according to claim 4,wherein the plurality of control pins are electrically connected to themain circuit unit through the plurality of low-speed transmissionchannels.
 6. The signal transmission circuit packaging structureaccording to claim 5, wherein the plurality of low-speed transmissionchannels are separated by a predetermined distance from the plurality ofhigh-speed input channels and the plurality of high-speed outputchannels.
 7. The signal transmission circuit packaging structureaccording to claim 1, wherein the main circuit unit is a repeatercircuit.